Sash-holder.



C. S. SWIFT.

' SASH HOLDER.

,15 ,614. PL-CANON "LED JULY22,1915.

COLUMBIA PLANOGRAPH COHWASIHNGT w Patented Nov. 9, 1915.

3 SHEETSSHEET 1.

' C. S. SWIFT.

SASH HOLDER.

. APPLICATION FILED 1U YZZ, l9 1,159,614. 1 L Patented Nov. 9, 1915.

, I I 3 EEEEEEEEEEEE 2- C. S. SWIFT. v

SASH HOLDER. APPLICATION FILED JULY 22. I915.

Patented Nov. 9, 1915.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

CHARLES S. SWIFT, OF NEW YORK, N. Y.

SASH-HOLDER.

Application filed July 22, 1915.

T 0 all whom it may concern Be it known that I, CHARLES S. Swrrr, acitizen of the United States, and a resident of New York, county of NewYork, and State of New York, have made and invented certain new anduseful Improvements 1n Sash-Holders, of which the following is aspecification.

My invention relates to a new and useful improvement in window lockingmechanisms and more particularly to a novel sash holder, wherein thesashes of the window may be locked when the same are in their closedposition, or the locking mechanism may be so set that either sash may beopened only a slight distance.

It is oftentimes desirable for the purpose of ventilation to leave thesash part way open from the bottom or from the top, and at the same timebe able to lock the same in this position or to prevent it from beingopened a greater distance.

In the device herein illustrated the sash may be locked in its closedposition or the lock may be so set that the window can be raised for ashort distance only, and such distance not being great enough to admitthe body of an intruder. Furthermore the locking mechanism is sodesigned that when the device is so set that the sash can only be openedfor a short distance, it will be impossible to raise the sash to itsfull open position, even though the handle of the lock be turned, unlessfirst the partly open sash be fully closed. In other words, an intrudercannot simply place his arm through the opening below the lower sash orabove the upper sash if the same be open and rotate the lockingmechanism unless, the partly open sash first be fully closed, which isnot possible if his arm extends through the opening.

An object therefore of the present invention is to providea sash holderand locking mechanism wherein both sashes may be locked when the sameare in their closed position or both sashes may be limited to a partlyopen position.

Still another object of my invention is to providea locking mechanism ofthe class described wherein it will be necessary to close the partlyopen sash before the sash can be opened to its full extent and themechanism released for such movement.

Specification of Letters Patent.

Patented Nov. 9, 1915.

Serial No. 41,230.

Still another object of my invention is to provide a lock of the classdescribedcom sisting of but few parts, easy to assemble,

occupying but little space and cheap to manufacture.

lVith these and other objects in view my invention consists in certainnew and novel constructions and combination of parts as will behereinafter more fully described and pointed out in the claims.

In the drawing forming a part thereof Figure 1 is a front elevationpartly in section of a window with the invention applied, and showingthe lower sash limited to a part way open position. Fig. 2 is afragmentary perspective view of one edge of the upper sash. Fig. 3 is aperspective of the complete sash holder or locking mechanism;

and detached from the frame of the'window.

Fig. 4 is a detail perspective view of the locking dog or arm. Fig. 5 isa sectional view of the sash holder that cooperates with the lower sashand showing the said sash in its closed and locked position. The pawlhowever is shown in front of the arm for the sake of clearness. Fig. 6is a similar view showing the beginningof the operation of releasing thelocking dogs, the dotted lines showing a continuation of the movement.Fig. 7 is a sectional view showing the locking mechanism released, andthe lower sash in a part way open position. Fig. 8 is a similar view ofthe locking mechanism in the same relative position as shown in Fig. 7but being the locking mechanism that cooperates with the upper sash.

Referring now to the drawings and particularly to Fig. 3, a base plate 1is provided having oppositely extending end portions 2 and 3, anddisposed on the opposite sides of the plate are the bearing posts 4: and5, in which is journaled the main operating shaft 6, which is providedat its one end with a key or handle 7 and formed on said shaft are thetwo contacting or crank arms 8 and 9, which are'preferably formedintegral with the shaft 6 and are disposed parallel to each other.

Formed in the base plate 1 are two parallel slots 10 which are directlybeneath'the arms 8 and 9 and which allow the said arms when rotated topass therethrough.

Located on and also formed integral with the operating shaft 6 are thetwo cams 11 I and 12 which are much shorter in length than the arms 8and 9, which arms are also parallel to each other but positioned toextend in directly the opposite direction to the aforementioned arms 8and 9.

Located on the aforementioned arms 8 and J and at a slight distance fromthe inner ends thereof are the stubs or pinions 13 and 11- which contactwith two arcuate stops when the said stops are in a certain position.

The base plate is further provided with the bearing posts 15 and 16, theone 15 being slightly different from the bearing 16 as it has preferablyone of the posts enlarged as at 17 to form a bearing for the pawl 18,

which is pivoted as at 19 and which pawl contacts in its outmostposition with a stop located on said post as at 90. Pivoted in thesebearings 15 and 16 are the two looking dogs 21 and 22 which, as will benoticed extend in the opposite directions, the upper ends of whichhowever are directly beneath the main operating shaft 6. These dogs arefree to pass through a second pair of slots in the base plate 1. Theform or shape of these dogs is clearly shown in Fig. -l, and it is to beunderstood that a description of the one will be a description of theother.

The dog is provided with an enlarged portion at its one end, and a notchor a stop is cut in its outer edge which portion contacts with the catchmechanism located in the window sashes, also formed on the enlargedportion of the locking dog is a projecting lug 29 which limits theinward movement of the same.

The upper end of the locking dog is cut away as at 26, and secured toone side of the same is the arcuate stop 27, which is recessed at 28 andwhich recess is in alinement with a second recess 30 in the cutawayportion 26 of the locking dog or arm 21. Positioned conveniently behindeach of these locking dogs 21 and are the springs 31 and which willnormally force the sash contacting portion of the dogs normallyinwardly.

A turning of the operating shaft 6 therefore will force the cams 11 and12 against the upper portion of the locking dogs 21 and and therebyforce the inner ends of both inwardly and naturally trie outer endsoutwardly or away from the window sashes.

A further revolution of the shaft will cause the studs 13 and 1 on thearms 8 and 9 to pass behind the arcuate stop members 27, so that eventhough the window sashes were forced against the enlarged por tion ofthe locking dog, the studs 13 and 1% will be behind the stop member 27and prevent the arms from rocking on their pivots.

Referring now especially to Figs. 1 and 2 it will be seen that bothsashes are pro vided both at their upper and lower ends with slots orgrooves 38 and 3%, and that both sashes are also provided with a catchmember 35, which is spring pressed and free to move inwardly thoughnormally held in its outward position. The sash is also grooved to allowfor the movement of this spring pressed member and provided with a coverplate 10. The purpose of these slots and 8%, (and taking forillustration the lower sash) is that the arm 8 of the operating shaft 6may be revolved and pass through the slot 33, and as the upper sash isin its closed position the slot in the lower portion thereof also willbe in alinement with the arm 9 and thereby allowing the operating shaft6 to be rotated.

T he pawl 18 prevents the operating shaft 6 from being rotated in thereverse position,'as if this were not present, when the window sash wasin its part way open position. an intruder could simply place his armthrough the open space and revolve the key in the wrong directionthereby forcing the cams against the locking dogs to release them fromtheir looted position.

lVhen the upper and lower sashes are closed the outer ends of thelocking dogs will contact with the catch mechanism and prevent eitherwindow from being raised, and the locking mechanism for the upper sashwill be in exactly the same relative position as the lower.

To release the locking mechanism tne operating s left is turned and theslot 33 in the lower window is directly behind the arm 8 and the lowerslot in the upper sash also directly in line with the arm 9, theoperating shaft may be revolved and the cams 11 and 12 will contact withboth locking dogs and force the inner ends inwardly and the outer endsoutwardly thereby permitting the raising and lowering of both windowsashes.

it now it is desired to permit the lower sash for instance to only raisea portion of the way the operating shaft is again revolved, allowing thelocking dogs to again spring to their locking position and the enlargedportion of the locking dog will then contact with the lower portion ofthe plate a0 in the window sash, thus preventing any further openingmovement of the lower sash. Furthermore the operating shaft 6 cannot berevolved until the lower sash is closed to its lowermost position, asthe arm 8 will contact with the edge of the sash, as the groove 33 isabove the said arm. The shaft cannot be reversed inits movement, as thearm 8 would also contact with the pawl 18. To therefore revolve theoperating shaft 6, it is necessary to lower the open sash, and thespring pressed catch mechanism will be forced inwardly and the groovetical with that just described of the lower sash, it being understoodthat the little catch member 35, is however also reversed in the uppersash.

in Figs. 7 and 8 the position of the parts clearly shows the windowsashes in a partly open condition; show the locking dog out of itslocking position, and show the groove in the sashes not in alinementwith the arms 8 and 9, so that either sash will have to be raised orlowered to its closed position before the operating mechanism can beturned.

From the foregoing it will be seen that a. threeouarters movement of theoperating shaft will force the locking dogs out of position, and thatthe remaining quarter move will allow them to spring back in place.However both windows have to be in a closed position before theoperating shaft can be revolved.

The purpose of a slot in the upper portion of the upper sash and in thelower portion of the lower sash is, that if anyone happened to turn themechanism from the inside when the upper sash were at the bottom of theframe or the lower sash at the upper portion of the frame, these slotswould register with the arms so that the operating shaft 6 could againbe turned. If these additional slots were not provided it would beimpossible to turn the operating shaft forward, as there would be noallowance for the swing of the arms, and the same could not be revolvedin the opposite direction, as the arm 8 would contact with the pawl 18and be held against further movement.

It will be readily seen that the device could be made with but onelocking dog and in this instance it would be used to be able to lock saya lower sash'when in its closed position or prevent that sash from.being raised when locked to alimited opening.

From the foregoing it will be seen that the sashes may be locked intheir closed position or that the upper sash may be opened a part way,but held against further clownward movement, or on the other hand thelower sash may be open part way and held against further upwardmovement, and it will be necessary to close the same before theoperating mechanism may be actuated.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is 1. A sash holder comprising a base, a lockindog pivoted thereon, a shaft provided with means for contacting with andoperating said locking dog, an arm carried by said shaft and adapted topass through an opening in said base.

2. A sash holder comprising a base, a locking dog pivoted thereon, ashaft provided with means for contacting with and operating said lockingdog, an arm carried by said shaft and adapted to pass through an'openingin said base and means to prevent the shaft from rotating in a reversedirection.

3. A sash holder comprising a base, a locking dog pivoted thereon, ashaft provided with a cam for contacting with and operating said lockingdog, said locking dog provided with an arcuate stop near its upper end,an arm carried by said shaft and adaptedto pass through an opening insaidbase and means carried by said arm to contact with said arcuate stopwhen the said shaft is in a locked position to thereby prevent thepivoting of said locking dog.

4. A sash holder comprising a base, a looking dog pivoted thereon, ashaft provided with a cam to contact with the upper portion of saidlocking dog, an arcuate stop located on the upper portion of saidlocking dog and directly beneath the said shaft, an arm on said shaftadapted to pass through an opening in said base, and a pinion located onsaid arm and adapted to pass behind said arcuate stop to thereby preventthe pivoting of said locking dog.

5. A sash holder comprising a base, a locking dog pivoted thereon andmeans connected with said locking dog to normally hold,

the same in an outward position, a shaft provided with a cam locatedabove said locking dog and adapted to contact with and operate the same,an arcuate stop carried by said locking dog and directly beneath saidshaft, an arm carried by said shaft having a pinion located thereon andadapted to pass behind said arcuate stop when said shaft is rotated tothereby prevent said locking dog from being forced inwardly, a pawllocated at one side of said locking dog to be tripped by said arm andprevent the same from being revolved in a reverse direction.

' 6. A sash holder comprising a base, a plurality of locking dogspivoted thereon, said locking dogs being disposed in the oppositedirections, a shaft extending transversely of said locking dogs andprovided with a plurality of cams to contact with and operate saidlocking dogs, a plurality of arms car-c ried by said shaft and adaptedto swing through openings in said base when said shaft is rotated. r

7. A sash holder comprising a base plate, a plurality of locking dogspivoted thereon and extending in the opposite direction, the

upper end of said locking dogs being cut away, a transverse shaftextending above said locking dogs and provided with a plurality of camsto contact'with the upper end of said locking dogs when the said shaftis rotated, stops located on said locking dogs and means connected withsaid locking dogs to normally hold the same in an outward position, armscarried by said transverse shaft and disposed parallel to each other andadapted to pass through parallel openings in said base plate when saidshaft is rotated and pinions on said arms to contact with the saidstops.

8. A Window sash provided with a groove in its upper portion. and thecatch mechanism located in the edge thereof in combina tion With a baseplate provided with a locking dog, a shaft for operating said lockingdog, an arm on said shaft and adapted to pass through an opening in saidbase plate and in the groove in the upper portion of said Window sashwhen the sash is in its lowermost position.

9. A Window sash provided with a groove in its npperportion, alongitudinally extending plate provided with a longitudinally extendingslot located in an edge of said sash, a spring pressed catch memberlocated. in one end of said longitudinally extending plate, incombination With a base plate pro vided with a locking dog, a shaft foroperating said locking dog to force the same in and out of contact withsaid catch member in said longitudinally extending plate, an arm carriedby said operating shaft adapted to pass through an opening in said baseplate when said shaft is rotated and pass through said groove in saidWindow sash when said Window sash is in its closed position.

Signed at New York and State of New York this 21st day of July A. D.1915.

CHARLES S. SWIFT. lVitnesses A. M. LINDENSTRUTH, JOHN C0011.

Copies Of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). C

